2403321312 has 144 divisors (see below), whose sum is σ = 7371181440. Its totient is φ = 671638272.

The previous prime is 2403321311. The next prime is 2403321317. The reversal of 2403321312 is 2131233042.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2403321311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1483639 + ... + 1485257.

It is an arithmetic number, because the mean of its divisors is an integer number (51188760).

Almost surely, 2^2403321312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2403321312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3685590720).

2403321312 is an abundant number, since it is smaller than the sum of its proper divisors (4967860128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2403321312 is a wasteful number, since it uses less digits than its factorization.

2403321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1678 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2403321312 is about 49023.6811347332. The cubic root of 2403321312 is about 1339.4832253978.

Adding to 2403321312 its reverse (2131233042), we get a palindrome (4534554354).

The spelling of 2403321312 in words is "two billion, four hundred three million, three hundred twenty-one thousand, three hundred twelve".